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Electric Circuits, Power & Energy

Total questions: 56

Worksheet time: 43mins

Name
Class
Date
1.

A path that allows only one route for an electric current is called a ____.

a)

parallel circuit

b)

parallel current

c)

series circuit

d)

series current

2.

The rate at which an electrical device converts energy from one form to another is called ____.

a)

electrical energy

b)

electrical power

c)

electrical resistance

d)

voltage regulation

3.

A circuit that has two or more branches for electrons to follow is a(n) ____.

a)

circuit diagram

b)

electron circuit

c)

series circuit

d)

parallel circuit

4.

A material through which electrons do NOT easily flow is a(n) ____.

a)

insulator

b)

fuse

c)

conductor

d)

transformer

5.

Which of the following is a device designed to open an overloaded circuit and prevent overheating?

a)

magnet

b)

circuit breaker

c)

resistor

d)

transformer

6.

An ampere is a unit of electrical ______.

a)

pressure

b)

none of these

c)

current

d)

resistance

7.

Which of the following is the correct relationship among power, current, and voltage?

a)

P = I/V

b)

V = P * I

c)

P = I * V

d)

E = P * t

8.

Which of the following is the correct equation to calculate electrical energy?

a)

P = I/V

b)

V = P * I

c)

P = I * V

d)

E = P * t

9.

What type of circuit is shown?

a)

Parallel

b)

Series

c)

Open

10.

How many paths does a series circuit have?

a)

4

b)

3

c)

2

d)

1

11.

What is a parallel circuit?

a)

It is a circuri rhar has one path for energy to flow.

b)

It is a circuit that has no paths for energy to flow.

c)

It is a circutt that has several paths for energy to flow.

d)

None of the above.

12.

Adding more loads to a parallel circuit will increase the currentt.

a)

True

b)

False.

13.

Does a break in one branch affect another branch in a parallel circuit?

a)

Yes

b)

No

c)

Sometimes

14.

The illustration depicts a short circuit.

a)

True

b)

False

15.

In a closed circuit, how does battery voltage affect current?

a)

As voltage increases, current increases.

b)

As voltage increases, current decreases.

c)

Voltage has no affect on current.

d)

If voltage exceeds current, a short circuit circuit will develop.

16.

If an electrical circuit were analogous to a water circuit at a water park, then the battery voltage would be comparable to ___________________.

a)

the rate at which water flows through the circuit

b)

the speed at which water flows through the circuit

c)

the distance that water flows through the circuit

d)

the water pressure between the top and bottom of the circuit

e)

the hindrance caused by obstacles in the path of the moving water

17.
In a parallel circuit, if one connection is broken, all of the connections stop working.
a)
True
b)
False
18.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
19.
When you flip a light switch on and off you are closing and opening a circuit.
a)
true
b)
false
20.

1. Which switch or switches must be closed to make the lamps light?

a)

Only switch a

b)

Only switch b

c)

Switches a and b

d)

Switches a , b and c

21.
The force that pushes the electricity through a circuit is called...
a)
resistance
b)
voltage
c)
current
d)
switch
22.
Which circuit (s) are parallel?
a)
A
b)
A and B
c)
B and C
d)
C
23.
Which one will still function if one light bulb goes out?
a)

A-Series

b)

B-Parallel

c)

A-Parallel

d)

B-Series

24.
If I add more light bulbs to a series circuit what happens?
a)
The current speeds up and the lights get brighter
b)
The current slows down and the lights dim lower
c)
The current speeds up and the lights dim lower
d)
The current slows down and the lights get brighter
25.
When all parts of the circuit are connected it is a ______ circuit. 
a)
open
b)
closed
26.
This circuit is .....?
a)
open
b)
parallel
c)
closed
d)
shows the flow of electricity
27.
Look at the picture.  Why won't the light bulb light up?
a)
The wires from the light bulb are not connected to the battery
b)
The switch is not closed to form a complete circuit 
c)
The wires from the light bulb are not connected to the switch 
d)
The wires from the battery are not connected to the switch 
28.

When wires are connected to a battery and a lightbulb in a circuit, the lightbulb is lit. Which types of energy are produced by the battery and lightbulb?

a)

Electrical, light and thermal

b)

thermal and sound

c)

sound and light

d)

all of the above

29.
If you replace the paper clip with a plastic spoon, what happens?
a)
The bulb doesn't light
b)
The bulb is dimmer
c)
The wires get hot
d)
There is no change
30.

Tammy makes a complete simple circuit with one bulb and three batteries. The bulb lights for an instant and then goes out. Why?

a)

Too much electricity flows through the bulb's filament

b)

Not enough electricity flows around the circuit

c)

The batteries are flat

d)

The batteries are not good

31.

How much CURRENT does a 1200 W bread maker draw from a 110 V outlet?

P = IV

a)

132000 amps

b)

0.09 amps

c)

1200 amps

d)

10.9 amps

32.
If the hair dryer and the vacuum cleaner are both on, what is the power used?
a)
2600 watts
b)
400 watts
c)
2200 watts
d)
1100 watts
33.
The power of an appliance is...
a)
the amount of voltage going through it 
b)
the amount of energy transferred per second
c)
the amount of charge that passes through per second
34.
Electrical power can be calculated using
a)
Resistance x Voltage
b)
Voltage x Current 
c)
Voltage ÷ Current
35.
Watts is the same as...
a)
Joules per second
b)
Voltage per second
c)
Current per second
36.
The voltage supplied to a circuit is 17 V and the current running through is 10 A. What is the power generated?
a)
170 W
b)
170 A
c)
1.7 V
d)
1.7 W
37.

A hot water heater rated at 2600 watts is wired to 120 V ac circuit. What is the amperage?

a)

21.67 Ohms

b)

21.67 amps

c)

11.8 amps

d)

16 amps

38.
A heating element resistance is 24 ohms. The current measures 10 Amps. What is the power?
a)
240 watts
b)
1,200 watts
c)
1,000 watts
d)
2,400 watts
39.

Which if the following is a unit of electrical energy?

a)

W

b)

kW h

c)

P

d)

m V

40.

How much does it cost to watch a plasma TV rated at 400 W for 5 hours if each unit (kWh) of electricity costs $1.10?

a)

$2.2

b)

$22

c)

$220

d)

$2200

41.

Electrical power can be calculated using

a)

Resistance x Voltage

b)

Voltage x Current

c)

Voltage ÷ Current

d)

Voltage + Current

42.

The power of an appliance is...

a)

the amount of energy transferred per second

b)

the amount of voltage going through it

c)

the amount of charge that passes through per second

d)

None

43.

Watts is the same as...

a)

Voltage per second

b)

Current per second

c)

Joules per second

d)

all of these

44.

Electric power is measured in

a)

kWh

b)

Amps

c)

Ohms

d)

Watts

45.

Electric energy is measured in

a)

kWh

b)

Amps

c)

Ohms

d)

Watts

46.

The rate at which electric energy is used is called

a)

Electric energy

b)

Electric power

c)

Voltage difference

d)

Electric current

47.

A kilowatt (kW) is how many watts?

a)

10

b)

50

c)

100

d)

1000

48.
Current that does NOT reverse direction is called ____. 
a)
magnetic current
b)
direct current
c)
circuit current
d)
alternating current
49.
Current that reverses direction in a regular pattern is called ____. 
a)
direct current 
b)
circuit current
c)
magnetic current
d)
alternating current 
50.

Which is NOT a conductor

a)
b)
c)
d)
51.

Which is NOT an insulator

a)
b)
c)
d)
52.

AC stands for __________ current.

a)

alternating

b)

Adjusting

c)

Alarmed

d)

Additional

53.

DC stands for __________ current.

a)

deviating

b)

default

c)

diverging

d)

direct

54.

What type of current is flowing in the circuit ?

a)

Alternating current

b)

Direct current

c)

Both

d)

None

55.

Which type of current is flowing ?

a)

Alternating current

b)

Direct current

c)

Both

d)

None

56.

The rate at which electricity is converted to another form.

a)

electrical current

b)

electrical energy

c)

electrical charge

d)

electrical power

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